1992 Chevy Camaro 92 Camaro V8 engine hesitation and stalls

The symptoms are hesitation while driving, hesitation goes away at about 3500 while accelerating. Also the engine stalls but can be started immediately after, but will not hold a steady idle(wants to die). A shop diagnosis stated the valves needed to be replaced ( I had previously checked the more obvious possibilities such as the egr valve, pcv, iac, vacuum leaks, and tps, and all are in good working order, or at least appear to be)
Going off of what the shop said (I had 0 compression in the number 3 cylinder) I replaced the valves, gaskets, seals on the numbers 1, 3, 5, 7 valvetrain. After putting everything back together and lashing the valves, It is still doing about the same thing. There is no chattering from the valves being improperly lashed. I am really at a loss as to what the problem could be and am very embarrassed about not being able to deduce the problem :/ I would greatly appreciate any help in regards to this problem. If you need any additional information please comment and I will provide it. Thank you very much for reading this.